Extracting MP3 sound from SWF notes

extract.sh

#! /bin/bash
echo Extracting from $1;
bname=$(basename $1 .swf);
data=$(swfdump "$1" | grep MP3)
echo "$data"
# Remove double spaces and take value in field 7 separated by spaces
ids=$(echo "$data" | sed 's,  , ,g' |cut -d " " -f 7)
Counter=1 # Counter 1..2..3..4..N
CounterWoError=0
# Loop through all id's
for id in $ids; do 
zpCounter=$(printf '%02d' $Counter) # Zeropadd Counter
fName="$bname"_"$zpCounter"_"$id.mp3"
echo swfextract -s "$id" -o "$fName" $1
swfextract -s "$id" -o "$fName" $1
if [ "$?" -eq 0 ]
then 
        echo "Extraction complete";
        CounterWoError=$((CounterWoError+1));
fi  
Counter=$((Counter+1));
done;
Counter=$((Counter-1));
echo "$CounterWoError of $Counter sounds extracted"